Abstract
Benefits of alloying Sc with aluminum resulting from the precipitation of coherent Al3Sc dispersoids, including refined microstructure, increased strength, and improved weldability, have been demonstrated for a number of commercial aluminum alloys. Historically interactions between Sc and Si have limited the benefits of Sc additions in Al-Mg-Si 6xxx alloys. The first step towards developing a Sc containing 6xxx-alloys requires studying the interaction between Si and Sc. Hence, this work characterizes the aging response associated with precipitation of Si-modified Al3Sc dispersoids in a Sc-containing Al-Si alloys. The work reported in this paper focuses on understanding the breakdown of the solid solution of Sc in Si-containing aluminum alloys. Results of this study can be used to define heat treatment schedules for scandium containing 6xxx alloys.
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© 2019 The Minerals, Metals & Materials Society
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Langan, T., Ramjayam, M., Sanders, P., Wood, T., Dorin, T. (2019). Heat Treatments for Precipitation of Scandium-Containing Dispersoids in an Si-Containing Aluminum Alloys. In: Chesonis, C. (eds) Light Metals 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05864-7_183
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DOI: https://doi.org/10.1007/978-3-030-05864-7_183
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